Centrifugal machine



T. A. BRYSON.

CENTRIFUGAL MACHINE.

APPLICATION FILED DEC.3I, I917.

Patented Feb. 24, 1920 2 SHEETS-SHEET I.

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' T. A. BRYSON.

CENTRIFUGAL MACHINE.

APPLICATION FILED DEC.31. 1917.

1920. 2 SHEETSSHEET 2.

Patented Feb. 24

f/YMEW/ar UNITED STATES PATENT oFFIoE.

TANDY AVBRYSON, OF TROY, NEW YORK, ASSIGNOR TO TOLHURST MACHINE WORKS, A

CORPORATION OF NEW YORK. i

CENTRIFUGAL MACHINE.-

- Specification of Letters Patent.

I Application filed December 31, 1917. Serial No.,209,808.

To all whom it may concern:

Be it known that I, TANDY A. BnYsoN, a citizen of the United States, residing at Troy, in the county of Rensselaer and State of New York, have invented new and useful Improvements in Centrifugal Machines, of which the following is a specification.

The invention relates to centrifugal machines, and more particularly to centrifugal machines for treating galvanized or dipped metal articles.

Objects of the invention are to provide a machine for rapidly and easily handling small dipped metal articles during the removal of surplus metal therefrom by centrifugal action and during the subsequent delivery and cooling thereof; to avoid in such work the use of the dipping baskets within the centrifugal. basket, which is slow, cumbersome and troublesome; to provide for the easy and rapid discharge of the finished work directly from the centrifugal basket. Other objects of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned through. practice with the invention.

The invention consists in the novel parts, constructions, combinations and improvements herein shown and described.

The accompanying drawings referred to herein and consituting a part hereof, illustrate one embodiment of the invention, and together with the description serve 'to explain the principles thereof.

uf the drawings:-- 7 V a Figure 1 is a vertical section substantially on the line AB of Fig. 2, of a centrifugal machine constructed in accordance with the principles of the invention;

Fig. 2 is a horizontal section on the line C-D of Fig. 1 with the basket, shaft and certain other parts omitted;

Fig. 3 is a fragmentary elevation showing an embodiment of cooling and discharge mechanism for the product; and

Fig. 4 is a like showing of a discharging means for the work.

Referring now in detail to the exemplified embodiment of the accompanying drawings, a centrifugal machine is illustrated having a frame of any suitable form, and shown with uprights 1 and 2 and a top cross piece 3. In accordance with certain features ofthe invention, a suspended centrifugal is preferably employed, and inthe embodied form the basket shaft 4 is supported from the cross frame piece 3. The journal and drive 5 for the shaft 4 is mounted on the frame member 3, and is driven in a suit able manner, as by a belt 6, runnin over 'ulleys 7 and over a driving pul ey v8. ulley 8 may be driven from the fast and loose pulley mechanism 9. It will be. understood that anfi other suitableor convenlent driving mec anism may be provided if desired.

Suspended from the shaft 4 is a basket, indicated generally by reference numeral 15. The basket is provided with perforated cylindrical walls the upper portion 16 thereof being preferably straight or vertical and the lower part thereof being preferably steeply inclined toward the bottom central portion of the basket, as shown in Fig. 1. The basket 15 is suspended from the shaft 4 in suitable manner, as by a sleeve 18 having a ta cred fit on the bottom end of the shaft 4, an being held in position there on by a nut 21. The sleeve 18 has arms or spiders 19 which extend. outwardly therefrom and are connected to the lower rim 20 of the basket, to support and whirl the basket with the shaft. The space between the arms 19 constitute 'a bottom discharge 24 from the basket for the finished work, as is indicated by the arrows in Fig. 1. The discharge openings 24 are closed by a conical" valve 25 encircling and fitting about the shaft 4. The valve 25 is slid upwardly along the shaft 4 to discharge the work when the operations thereon are completed and is slid downwardly to the position shown in Fig. 1 to close the discharge openings to .receive the new work.v Suitable devices (not shown) may be'employed for so raising and lowering the valve 25 and may be attached to the sleeve of the valve surrounding shaft 4 and shown in Fig. 1 as extending above lids 37. By reason of the steeply inclined portion of the basket bottom, the work will slide out through the discharge openings when valve 25 is raised without any handling on the part of an operative.

Means are provided by the invention for maintaining in the basket during the whirling thereof to throw off the surplus dipped metal a sufficiently high temperature to prevent undesirable vcooling of the work, which cooling would tend to retain too much of the coating metal upon the work. Cooperating therewith are quick work loading and work discharging means, which obviate leaving the machine open except forvery brief periods, and thereby conserve the high temperature in the centrifugal basket;

" In the embodied form of such means,

.heating means are provided preferably applied about the cylindrical casing 28, which casing is preferably of the'usual metal and surrounds the basket 15. The casing. 28 is.

surrounded by a cylindrical wall 2910f any suitable material which is a non-conductor for heat. Extending inwardly from the wall .29 to the top of the casing 28 is a top closure 30 of similar non-conducting material, and a like bottom closure 31 is preferably provided.

Suitable heating means are provided, and as embodied, a furnace 32 opens into the space between the casing 28 and the outer encircling wall 29. An outlet 33 conveys away thehot gases after they have passed around the casing 28, the wall 34 separating the inlet and outlet for the hot gases.

The top of the casing 28 is provided with means for preventing the escape .of heat from within the casing, and for this purpose there are two semi-circular closures or lids 37, attached by hinges 38 to the inwardly projecting top portion 36 of the casing'28. These lids 37 fit around the shaft 4, and need ,to be opened only when the new work is.

dumped into the basket, as the finished work is discharged from the bottom of the basket. The. top of the casing is thus practically continually closed. A trough 39, outwardly.

and circularly inclined, is preferably provided for flowing away the molten metal thrown off from the work by the centrifugal action.

In accordance with certain features of the invention, means are provided for. conveying away the finished Work from the centrifugal so as to avoid any lifting out or other troublesome and undesirable handling of t e hot work. Means are also provided, if esired, cooperating with the conveying means for cooling the finished work, so that it may be easily and rapidly handled as it comes from'the centrifugal machine.

In Fig. 3 of the drawings, there is shown an embodiment, of cooling and. conveying means. Thereln, a slidable closure 45 is provided for an opening in the floor 14, the

closure working in guides 46 and 47, the closure being withdrawn to permit the downward passage of the finished work.

Beneath the closure, as embodied, is a container 48 for the water or other cooling medium, :having preferably inclined sides, and having an inlet 49 nearthe bottom, and an outlet 50 near the top thereof. An endless conveyer 51 is shown running over rollers 52 and 53, the conveyer extending upwardly through an upwardly and outwardly inclined extension of the container 48. The

discharged articles pass from the basket 15 journal blocks 57, and guide plates 58' may be used to direct the discharged work to, and to retainit upon, the conveyer. 1

The mannerof operation and utilization of the illustrated mechanism as follows:- 1 v The usual dipping basket containing the galvanized or coatedarticles is lifted from the bath, the cover 37 is momentarily raised and the work dumped from the dip-' ping basket into the centrifugalbasket 15, the lid 37 being thereupon closed. As the is substantially basket rotates the superfluous metal is thrown from the work, and, striking the casing 28' flows down into ,the trough or gutter 39, and flows away. When all the superfluous metal is thrown off from the work the basketis stopped, the valve 25 is raised and the hot work slides out through the openings 24.

There are no dipping baskets or other cumbersome devices to be placed within the centrifugal basket 15, the interior of which is always, clear except for the work being operated upon, and when the work is finished there is no handling of the hot work, nor

any removal of hot baskets or'fixtures from.

the centrifugal basket15, necessary. The manner of operation of the discharge device has already'been explained. The work is discharged almost instantaneously, and without any lifting of hot baskets or any lifting whatsoever, and the finished work is delivered automatically by the machine and is cool enough to be handled with comfort and safety. other instant after discharging and this both The machine can be reloaded in an keeps the machine steadily at work and also conserves -the heat.

It will be understood that changes may be made from the precise form of mechanism and a heating chamber casing surrounding the basket and having lids closing the space above the basket and having an inwardly projecting bottom fitting around the bottom part of the basket,

and means for heating the space within the casing.

2. A centrifugal machine including in combination a whirling open top basket having a bottom closure, a fluid intercepting casing surrounding the basket and having lids closing the space above the basket and having an inwardly projecting bottom fitting around the bottom part of the basket, surrounding but not communicating with the casing.

3. A centrifugal machine including. in

combination a whirling open top basket hav-.

ing a bottom closure, a fluid intercepting casing surrounding the basket and'having lids closing the space above the basket and having an inwardly projecting ting. around the bottom part of the basket,

and inclined tOi drain the thrown-off molten metal to a single point, and means forheating the space within the'casing.

4:. A centrifugal machine including in combination a whirling perforate basket, an imperforate heatconducting closure around and above and beneath the basket, a-heat insulating wall about the heat conducting closure and forming therewith a' heating chamber, the heat conducting chamber having a central bottom opening and the basket having a bottom discharge in line with the opening, the basket substantially closing the opening in the bottom of the heat conducting chamber.

5. A centrifugal machine including in combination a whirling perforate-basket, an imperforate heat conducting closure around and above and beneath the basket, a heat insulating wall about the heat conducting closure and forming therewith-a heating chamber, the heat conducting chamber having a central bottom opening and the basket having a bottom discharge in line with the opening, the basket substantially closing the opening in the bottom of the heat conducting chamber, and aconveyer extending from the bottom of the basket to the outside of the insulating wall;

6. A centrifugal machine including in.

combination a whirling perforate basket, a shaft sup orting the basket from above and a drive t ducting closure around and above andbeneath the basket, heat insulating wall about the heat-conducting closure and formbottom fiterefor, an imperforate heat con-' ing therewith a heating chamber, the heat- I conducting chamber having a central bottom-v opening and the basket having a bottom discharge in line with the opening, the basket substantially closing the opening in the bottom of the heat conducting chamber.

7. A centrifugal machine including in combination a whirling perforate basket, an imperforate heat conducting closure around and above and beneath the basket, including a top lid, a heat insulating well about the heat conducting closure and forming therewith a heating chamber, the heat conducting chamber having a central bottom opening and the basket having a bottom discharge in line with the opening, the basket substantially closing the opening in the bottom of the heat conducting chamber. 4

8. A centrifugal machine including in combination a whirling perforate basket, a shaft supporting the basket from above and a drive therefor, an imperforate gheat con-' ducting closure around and above and be-- and above and beneath the basket, including a plurality of lids opening back from the center of the casing, a heat insulating wall about the heat conducting closure and forming therewitha heating chamber, the heat conducting chamber having a central bot tom opening and the basket having a bottom discharge in line with the opening, the

basket substantially closing the openin in the bottom of the heat conducting cham er. 10. A centrifugal machine, including in combination a whirling perforate basket, a shaft supporting the basket from above and a drive therefor, an imperforate heat conducting closure around and'above and be neath the basket, including a pluralit of lids opening away from the shaft, a eat insulating'wall' about the heat conducting closure and forming therewith a heating chamber, the heat conducting chamber having a central bottom opening and the'basket having a bottom discharge in line the opening, the basket substantially closing the opening in the bottom of the heat conducting chamber, v

11. A centrifugal machine inciuding in combination a whirling perforate basket, an im erforate heat conducting closure around an above and beneath the basket, said bot tom being inclined to form a hot metal bottom discharge incline with'the drain, a heat insulating Wall about the heat In testimony whereof, I have signed my conducting closure and forming therewith name to this specification in the presence of 10 a heating chamber, the heat conducting two subscribing Witnesses.

chamber havin a central bottom opening and the basket ha-ving a bottom discharge TANDY BRYSON' in line With the opening, the basket substan- Witnesses:

tially closing the opening in the bottom of Y MATILDA K. BUsKIN,

the heat conducting chamber. N. M. SLAYMAKER. 

